OGG to MP3

What this does

OGG is a container, and the audio inside it is usually Vorbis. It is free of patents, which is why it became the default for game audio, Wikipedia’s sound files, and several messaging apps — and why hardware players, which license their codecs, so often will not touch it.

OGG Vorbis turns up in games, on Wikipedia, and in some messaging apps. Support outside those places is patchy.

Lossy to lossy, and what that means here

Vorbis and MP3 are both lossy, so converting between them is a second compression pass over audio that has already been compressed once. Each pass works from what the previous one left, and the losses accumulate. In practice one careful pass at 192 kbps or above is not something most people hear, but the rule follows from how the formats work: convert from the best copy you have, not from a copy of a copy, and do not convert back and forth repeatedly.

Nothing is uploaded

The conversion happens inside this page. Your file is read by the browser, converted here, and saved straight back to your downloads. It is never sent to a server, so there is no upload wait and no size cap beyond what your own device can hold.

Open your browser’s developer tools, switch to the network panel, and convert a file. You will see the converter itself download once, and no upload of your audio at all. That is the whole difference between this and a site that converts on a server, and what that difference actually means is worth a read.

The first conversion is slower

The converter is about 32 MB and downloads the first time you use it, which is the one moment this page is not instant. After that it is cached, and later conversions start immediately, even offline. So do later visits.

Questions